Which structure forms the boundary between the retina and the choroid?

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Multiple Choice

Which structure forms the boundary between the retina and the choroid?

Explanation:
Bruch's membrane forms the boundary between the retina and the choroid. It’s a thin, acellular, multi‑layer sheet located directly between the retinal pigment epithelium (RPE) and the choroid, separating the outer retina from the vascular tissue beneath. The RPE sits on top of Bruch's membrane from the retinal side, but the actual interface with the choroid is Bruch's membrane. The internal limiting membrane, in contrast, marks the boundary between the retina and the vitreous, not the retina and the choroid.

Bruch's membrane forms the boundary between the retina and the choroid. It’s a thin, acellular, multi‑layer sheet located directly between the retinal pigment epithelium (RPE) and the choroid, separating the outer retina from the vascular tissue beneath. The RPE sits on top of Bruch's membrane from the retinal side, but the actual interface with the choroid is Bruch's membrane. The internal limiting membrane, in contrast, marks the boundary between the retina and the vitreous, not the retina and the choroid.

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